00506nam a2200157Ia 4500001001100000005001700011008004300028020001500071050001500086245011300101260002500214300001500239650004100254650003800295999001500333000001649320251012174546.0  800529s1973    sz           i00  0 enghc  a9221010090 4aHD1459 I5710aMechanisation and employment in agriculturebcase studies from four continentscInternational Labour Office   aGenevabI.L.Oc1973   a192pc24cm00aAgricultural laborersxCase studies.00aFarm mechanizationxCase studies.  c6134d6134